Dual-Modality PET and MR Imager for preclinical studies. The only LabPET/MR system that combines two unique technologies: digital APD-based PET imaging with cryogen-free superconducting 3.0T MRI for one-step in-line PET/MR imaging of small animals. The benefit of combining multiple in vivo imaging technologies such as MRI and PET is that a small animal subject only needs to be loaded and prepared for imaging once, without the need for repositioning or transfer between machines.